# RE: PPC 2.6.11.4 kernel panics while doing insmod (store fault wi th d cbst in icache\_flush\_range)

- From: Kallol Biswas \<hidden\>
- Date: 2006-08-29 04:59:58 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2006/08/871315

```text
Processor: PPC440
Dcbst takes the store fault.

-----Original Message-----
From: Paul Mackerras [mailto:<redacted>] 
Sent: Monday, August 28, 2006 9:35 PM
To: Kallol Biswas
Cc: <redacted>; <redacted>; Ronald Lee; Radjendirane Codandaramane; Shawn Jin
Subject: Re: PPC 2.6.11.4 kernel panics while doing insmod (store fault with d cbst in icache_flush_range)

Kallol Biswas writes:

>         mr      r6,r3
> 1:      dcbst   0,r3
>         addi    r3,r3,L1_CACHE_LINE_SIZE
>         bdnz    1b
> 
> The instruction takes a store fault (DST bit, bit 8 of ESR gets set), 
> kernel panics with oops (signal 11).

What processor are you using?

Which instruction takes a store fault?

Paul.
```